EP2352018A1 - Dispositif de détermination d'une propriété diélectrique d'un ensemble condensateur - Google Patents
Dispositif de détermination d'une propriété diélectrique d'un ensemble condensateur Download PDFInfo
- Publication number
- EP2352018A1 EP2352018A1 EP11000173A EP11000173A EP2352018A1 EP 2352018 A1 EP2352018 A1 EP 2352018A1 EP 11000173 A EP11000173 A EP 11000173A EP 11000173 A EP11000173 A EP 11000173A EP 2352018 A1 EP2352018 A1 EP 2352018A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical
- alternating signal
- capacitor arrangement
- capacitor
- signal generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 94
- 238000011156 evaluation Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000012360 testing method Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 24
- 230000008859 change Effects 0.000 claims description 9
- 239000004753 textile Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
- B65B13/025—Hand-held tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/185—Details of tools
- B65B13/187—Motor means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/24—Securing ends of binding material
- B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
- B65B13/322—Friction welding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/228—Circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
- G01N33/365—Filiform textiles, e.g. yarns
Definitions
- the present invention is in the field of electrical measuring devices. It relates to a device for determining a dielectric property of a capacitor arrangement, according to the preamble of the independent patent claim.
- the invention allows automatic adjustment of the device.
- a preferred application for the invention is the capacitive testing of elongated, preferably textile structures such as card sliver, roving, yarn or fabric.
- Such a test may, for example, the detection of foreign substances or the detection of changes in mass per unit length and / or the measurement of moisture in the test to the goal.
- the invention can be used, for example, in the production process (online) in yarn cleaners on spinning or winding machines or in laboratory testing (offline) in yarn testing machines.
- a measuring capacitor is typically designed as a flat plate capacitor and has a passage opening for the test material.
- the measuring capacitor is part of an LC oscillator, so that when the LC oscillator is excited, an electrical AC voltage is applied to the measuring capacitor.
- the passage opening is thereby acted upon by an alternating electric field.
- the test material is moved through the plate capacitor and exposed to the alternating field.
- a capacitive yarn or tape sensor is z. B. in the GB-638,365A described.
- the device includes a reference capacitor in addition to the actual measuring capacitor. This can be formed by adding a third, parallel to the two measuring capacitor plates arranged capacitor plate, wherein the three capacitor plates are connected together to form a capacitive measuring circuit. Examples of measuring circuits and suitable evaluation circuits for their output signals can be found in the publications EP-0'924'513 A1 . WO-2006/105676 A1 and WO-2007/115416 A1 ,
- the measuring circuit should deliver an output signal with the value zero when the AC voltage is applied.
- Each individual measuring circuit must be adjusted individually for symmetrization. Symmetry balancing takes place in production by the manufacturer and, if necessary, during maintenance by a service person.
- the capacitance of at least one trimming capacitor connected in parallel with the measuring capacitance is changed.
- the trimming is done manually with a suitable tool, eg. B. a screwdriver.
- the known method of laser trimming is used. In any case, the device must be opened for adjustment.
- Such manual matching is cumbersome, time-consuming and costly.
- the DE-10'2005'006'853 A1 discloses a measuring system with a sensor element comprising a ladder structure forming a first resonant circuit.
- a second resonant circuit is coupled to the first resonant circuit and includes a variable component so that its resonant frequency is adjustable. Since the two oscillating circuits a coupled Form system, can also influence the determined by the first resonant circuit resonance behavior and thus shift to desired values. As a result, for example, deviations of the capacitive or inductive component of the conductor structure, which possibly occur during the manufacture or assembly of the sensor element, can be compensated.
- a capacitive yarn cleaner with a measuring capacitor through which the yarn passes is in the GB-963,258A shown.
- the voltage across the measuring capacitor is tapped and used to trigger a yarn cut.
- a variable resistor is connected, and the ends of the series circuit thus formed are connected to an AC generator. The sensitivity of the yarn cleaner can be adjusted by changing the resistance.
- the US 3,768,006 A shows an apparatus and a method for capacitive measurement of the water content in an oil-water Emlulsion flowing in a pipeline.
- the tube outer wall forms the outer, grounded electrode of the measuring capacitor, and an element arranged in the center of the tube forms the inner electrode.
- a reference capacitor of known capacity is connected in series with the measuring capacitor.
- An AC generator generates an AC voltage which is applied to the two capacitors. The voltage across the reference capacitor is measured and is a measure of the water content.
- the voltage across the measurement capacitor filled with measurement material is kept constant with a control loop, which regulates the output amplitude of the AC voltage generator.
- the US-A-3,684,953 deals with a device and a method for the quantitative determination of a property of a dielectric test material, in particular its relative moisture content.
- the test material is introduced into a measuring capacitor.
- An alternating electrical signal which is generated by an oscillator with a downstream amplifier, is applied to the measuring capacitor.
- a tapped off at the measuring capacitor signal is demodulated and compared with the applied to the measuring capacitor, also demodulated alternating signal by, for example, a quotient of the two signals is formed.
- the comparison is based on the moisture content of the test material closed.
- the gain of the amplifier is controlled by the demodulated output of the measuring capacitor.
- a variable matching capacitor connected in parallel with the measuring capacitor is provided.
- From the US 4,843,879 A is a device for the capacitive quality control of textile threads known. It contains a double capacitor arrangement with a measuring capacitor and a reference capacitor.
- the double capacitor assembly is incorporated in an electrical circuit.
- the circuit includes an oscillator for applying two AC voltages of opposite phases to the two outer capacitor electrodes of the dual capacitor array. In each branch between the oscillator and the respective electrode are a signal amplifier and a balancing capacitor.
- the balancing capacitors are used to balance the output signal of the double capacitor arrangement without test material to the value zero.
- the device should be simple, fast, inexpensive and in particular automatically adjustable.
- the invention is based on the idea of providing matching means in an electrical path between an alternating signal generator and a measuring circuit including the capacitor arrangement, which can be controlled by means of an electrical control signal in order to equalize an output signal of the device.
- the device With such external balancing means, the device is adjusted without interfering with the capacitor arrangement itself. This opens up the possibility of automatic adjustment of the device.
- capacitor arrangement refers to an arrangement having two bodies which are non-uniformly chargeable by the alternating electrical signal of the alternating signal generator and separated from one another by at least one dielectric
- the capacitor arrangement is a capacitor having two from each other spaced apart plates between which there is air and between which a moving elongate textile test object to be examined can be inserted
- electrical alternating signal in this document being an electrical voltage or current signal having at least one time-varying, preferably periodic component ( AC component) understood, in addition to a temporally substantially constant proportion (DC component, offset) can be superimposed.
- the inventive device for determining at least one dielectric property of a capacitor arrangement includes at least one alternating signal generator for applying an electrical alternating signal to the capacitor arrangement. It also includes an evaluation circuit for evaluating at least one electrical measurement variable of an electrical signal picked up at the capacitor arrangement.
- the device includes balancing means which are arranged in an electrical path between the at least one alternating signal generator and the capacitor arrangement and by means of which at least one parameter of the electrical alternating signal is variable such that an output signal of the evaluation circuit at defined, constant conditions a certain value, preferably zero , assumes.
- the device has a feedback, by means of which an output signal of the capacitor arrangement or of the evaluation circuit acts on the control means.
- the capacitor arrangement is preferably decoupled from the alternating signal generator such that it does not significantly influence the fundamental frequency and the waveform of the applied alternating signal.
- the inventive device preferably includes a reference capacitor, which is connected in series with the capacitor arrangement.
- the at least one alternating signal generator can be set up to apply two alternating electrical voltages with opposite phases to the capacitor arrangement or to the reference capacitor.
- the balancing means may be arranged in the electrical path between the alternating signal generator and the capacitor arrangement and / or in the electrical path between the at least one alternating signal generator and the reference capacitor.
- a preferred use of the device according to the invention lies in the capacitive examination of a moving elongated textile test material such as card sliver, roving, yarn or fabric, wherein the moving test material influences the capacitor arrangement.
- an electrical alternating signal is generated by at least one alternating signal generator and applied to the capacitor arrangement. At least one electrical measured variable of an electrical signal tapped off at the capacitor arrangement is evaluated. At least one parameter of the electrical alternating signal in an electrical path between the at least one Alternating signal generator and the capacitor arrangement is changed such that an output signal of the evaluation at defined, constant conditions, a certain value, preferably zero, assumes. The change of the at least one parameter is controlled by an electrical control signal.
- the capacitor arrangement is left essentially unchanged in time, an alternating electrical signal is applied to the capacitor arrangement, an electrical output signal of the capacitor arrangement is tapped, and the electrical control signal is influenced by the output signal.
- the influence of the electrical control signal by the output signal can be done automatically in a closed loop.
- This first embodiment of the method according to the invention can be used for adjusting the device according to the invention such that the output signal assumes a specific value, preferably zero, at defined, constant conditions.
- the capacitor arrangement is left substantially unchanged in time, and the electrical control signal is independent of an output signal of the capacitor arrangement.
- the electrical control signal may be a temporally rapidly changing, synthetically generated and / or previously stored signal.
- the invention is useful for balancing the device. Thanks to the invention, the adjustment of the device is simple, fast and inexpensive. The instrument does not need to be opened to match the measurement circuitry. The adjustment can be made at any time. It can be done automatically by the device itself, without the intervention of an operator. This also makes it possible to perform an adjustment at any time. Thus, an adjustment before each measurement, before every tenth measurement, could be performed automatically with significant changes in long-term characteristics of the output signal or after a major change in the environmental conditions. This can lead to an increase of the measuring accuracy, the measuring reliability, the reproducibility and in general an improvement of the measuring results.
- the adjustment means may not only be useful for balancing the device. They can also be used to feed any electrical control signals into the device. By means of such control signals, the device is deliberately detuned. A targeted detuning of the device can have the same or a similar effect as a detuning by a change in the capacity to be measured. By feeding control signals into the device via the adjustment means, measurements can therefore be simulated.
- the capacities of the device, with the exception of the adjustment means, should not change. Simulated measurements can z. B. are used for testing an evaluation circuit and for troubleshooting in the evaluation circuit. You can a comparison of the evaluation, z. B. of filters contained in the evaluation, serve. They can also be used for testing and / or Setting the device serve. It is possible to previously record output signals of real measurements with the same device or another sensor, store them in a memory and feed them as input signals via the balancing means into the device. This allows the device to be equipped with a "record and playback" function.
- FIG. 1 explains the invention on the basis of a simple block diagram.
- the inventive device 1 is used to measure a capacitance 21, which may be used in a measuring circuit 2.
- an electrical alternating signal for. As an AC voltage applied.
- an alternating signal generator 3 is provided to the measuring circuit 2.
- the alternating signal generated by the alternating signal generator 3 can still be filtered and / or amplified in a filter and / or amplifier stage 5.
- the filter and / or amplifier stage 5 preferably also serves to decouple the capacity 21 to be measured from the alternating signal generator 3 in such a way that it converts parameters of the alternating signal generated by the alternating signal generator 3, e.g. B. frequency, phase and / or amplitude of the alternating signal, not affected.
- the filter and / or amplifier stage 5 is no longer shown in the following figures.
- the measuring circuit 2 is preferably followed by an evaluation circuit 6, which evaluates an output signal of the measuring circuit 2.
- the evaluation circuit 6 may be formed as a computer. In turn, it outputs on an output line 61 an output signal, which is a measure of the measured
- Capacity is 21.
- further stages can be provided in the device 1 according to the invention.
- filters, amplifiers and / or mixers between the measuring circuit 2 and the evaluation circuit 6, but these are not shown in the accompanying drawings for the sake of simplicity.
- balancing means 4 for balancing the device 1 are arranged in an electrical path between the alternating signal generator 3 and the measuring circuit 2, by means of which at least one parameter, for. B. the amplitude of the electrical alternating signal is variable.
- the capacitance 21 to be measured and possibly other capacitances in the measuring circuit 1 do not change over time. So there should be time constant ambient conditions such as temperature and humidity or appropriate changes should be compensated. If the capacitance 21 to be measured is designed as a capacitor for receiving test material (as shown in the following figures), no test material should be in the capacitor during the calibration, or the capacity of the test material should not change over time.
- an electrical alternating voltage signal is applied to the capacitance 21 to be measured.
- the adjustment means 4 change at least one parameter of the electrical alternating signal such that the output signal of the device 1 on the output line 61 assumes a specific value, preferably zero.
- the adjustment means 4 can be adjusted manually by a person, for example after the manufacture or maintenance of the device 1.
- the adjustment means 4 can be adjusted automatically.
- the automatic adjustment can be done in a dedicated control unit 7 or in the evaluation unit 6.
- FIG. 1 a feedback from the output line 61 to the adjustment means 4 is shown, which outputs a control signal dependent on the output signal of the evaluation unit 6 or the measuring circuit 1 to the adjustment means 4.
- the device 1 can be automatically adjusted.
- there is a closed loop in which the output signal is the controlled variable to be controlled to the setpoint zero, the control unit 7 acts as a controller and the control signal is the control value.
- the controlled variable can be tapped off instead of behind the evaluation unit 6.
- FIG. 2 A first embodiment of the device 1 according to the invention is shown in FIG FIG. 2 shown.
- the device 1 is used for the capacitive measurement of a test material 9, z. B. a yarn.
- the test material 9 in a measuring capacitor 21, z. B. a flat plate capacitor introduced.
- the alternating signal generator 3 can, for.
- a synthesizer preferably a direct digital synthesizer (direct digital synthesizer, DDS) be.
- the synthesizer 3 can be controlled by a digital interface 33.
- the synthesizer 3 preferably has two outputs 31, 32 for two alternating electrical signals which are substantially identical, but phase shifted by 180 °.
- the expert is also known other alternating signal generators, which are suitable for applying an electrical alternating signal to the measuring circuit 2, z. B.
- RC oscillator from the following set: RC oscillator, LC oscillator, quartz oscillator, oscillator with ceramic resonator, oscillator with SAW component (surface acoustic waves, SAW), oscillator with logic modules, phase-locked loop (phase-locked loop, PLL), pulse width modulator (PWM), flip-flop.
- SAW surface acoustic waves
- PLL phase-locked loop
- PWM pulse width modulator
- the adjustment means 4 include a plurality of resistors 421 connected in parallel with each other individually or in groups by switches 422, e.g. B. high-frequency transistors, on and are wegschaltbar. This results in a variable total resistance, over which a voltage correspondingly decreases, which also depends on the output by the synthesizer current.
- the resistors 421 can only at one of the two synthesizer outputs or, as in the embodiment of FIG. 1 , be attached to both synthesizer outputs 31, 32.
- the switches 422 may be controlled by a corresponding digital interface 7.
- no test material 9 is introduced into the measuring capacitor, and attention is paid to temporally unchangeable ambient conditions such as humidity and temperature.
- an alternating electrical signal is applied to the measuring circuit 2, and the position of the switch 422 is controlled by the digital interface 7 so that the output signal of the measuring circuit 2 is zero. If this is the case then the device 1 is balanced and the position of the switches 422 is stored and maintained for the actual measurements with the sample 9.
- the digital interface 7 thus corresponds to the control unit 7 of FIG. 1 and acts as a controller in a closed loop.
- FIG. 3 shows a second embodiment of the inventive device 1.
- the adjustment means 4 are formed as resistance ladders.
- Such a resistance ladder essentially comprises a plurality of series-connected resistors 431 which can be switched on or off individually or in groups by means of switches 432 via further resistors 433.
- switches 432 By suitable switch positions, which in turn can be controlled by a digital interface 7, a balance of the device 1 can be achieved.
- FIG. 4 For example, a differential digital-to-analog converter 441 with two outputs of arbitrary bit width is used.
- the digital / analog converter 441 is controlled by a suitable digital interface 7. It generates a voltage which is proportional to the detuning or to the adjustment of the measuring circuit 2. With this voltage, the AC voltage of the synthesizer 3 is modulated in an analog mixer or multiplier 442, and the thus modulated signal is applied to the measuring circuit 2.
- the amplitude of the alternating voltage generated by the synthesizer 3 can be set arbitrarily until the device 1 is balanced.
- the two in FIG. 4 drawn resistances 443 serve the conversion of an AC supplied by the synthesizer 3 into an AC voltage. They are omitted if the synthesizer 3 is already designed as an AC voltage source.
- the differential digital / analog converter 441 two single-pole digital / analog converters could be used.
- a fourth embodiment of the inventive device 1, as in FIG. 5 is working according to the principle of the voltage-controlled amplifier. It includes two voltage controlled variable gain amplifiers 452 (VGA) for the two output signals of the synthesizer 3.
- the gains of the variable amplifiers 452 are e.g. B. controlled by a digital / analog converter 451, which in turn is controlled by a digital interface 7.
- VGA voltage controlled variable gain amplifiers 452
- Analogous to the embodiment of FIG. 5 works a fifth embodiment of the inventive device 1, which in FIG. 6 is shown.
- PGA programmable gain amplifier
- They are controlled by a suitable digital interface 7.
- the digital / analog converter 451 is omitted in this embodiment.
- FIG. 7 uses digital potentiometer or Rejustoren 471. These can be controlled via one or two digital interfaces 7, whereby their resistance is changed so that a targeted voltage drop caused by the AC generated by the synthesizer 3. If the synthesizer 3 is designed as an alternating voltage source, the device 1 can alternatively be connected as a voltage divider.
- digital potentiometers or Rejustoren 481 are used, in each case, for example, in the negative feedback of an amplifier 482, which amplifies a generated by the synthesizer 3 alternating signal between the synthesizer 3 and the measuring circuit 2.
- digital potentiometer 481 could be in the embodiments of the FIGS. 7 and 8 Alternatively, conventional, analog potentiometers are used. With them an operator could adjust the device 1 manually.
- capacitive diodes 492 are used to form capacitive voltage dividers.
- the voltages for the control of the capacitance diodes 492 are z. B. supplied by a differential digital / analog converter 491 with two outputs, which in turn is controlled by a digital interface 7.
- a differential digital / analog converter 491 supplied by a differential digital / analog converter 491 with two outputs, which in turn is controlled by a digital interface 7.
- two single-pole digital / analog converters could be used.
- FIG. 10 finally shows a ninth embodiment of the inventive device 1.
- This uses two direct digital synthesizer 3, which are controlled by a digital interface 33 such that their alternating signals are mutually phase-shifted by 180 °.
- the amplitude of the alternating signal can be influenced by a control voltage applied to the synthesizer 3.
- a digital / analog converter 411 controlled by a digital interface 7 is connected to the synthesizers 3 to generate the control voltage.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Pathology (AREA)
- Textile Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Food Science & Technology (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01646/08A CH699753A1 (de) | 2008-10-16 | 2008-10-16 | Vorrichtung und verfahren zum ausmessen einer kapazität. |
EP09748935.5A EP2347250B1 (fr) | 2008-10-16 | 2009-10-12 | Procédé de alignement de symetrie d'un dispositif capacitif |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09748935.5A Division-Into EP2347250B1 (fr) | 2008-10-16 | 2009-10-12 | Procédé de alignement de symetrie d'un dispositif capacitif |
EP09748935.5 Division | 2009-10-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2352018A1 true EP2352018A1 (fr) | 2011-08-03 |
EP2352018B1 EP2352018B1 (fr) | 2013-01-09 |
Family
ID=42106182
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11000173A Active EP2352018B1 (fr) | 2008-10-16 | 2009-10-12 | Dispositif de détermination d'une propriété diélectrique d'un ensemble condensateur |
EP09748935.5A Active EP2347250B1 (fr) | 2008-10-16 | 2009-10-12 | Procédé de alignement de symetrie d'un dispositif capacitif |
EP11000172.4A Active EP2352017B1 (fr) | 2008-10-16 | 2009-10-12 | Procédé pour tester un dispositif de mesure capacitaire |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09748935.5A Active EP2347250B1 (fr) | 2008-10-16 | 2009-10-12 | Procédé de alignement de symetrie d'un dispositif capacitif |
EP11000172.4A Active EP2352017B1 (fr) | 2008-10-16 | 2009-10-12 | Procédé pour tester un dispositif de mesure capacitaire |
Country Status (6)
Country | Link |
---|---|
US (1) | US8981797B2 (fr) |
EP (3) | EP2352018B1 (fr) |
JP (1) | JP2012506059A (fr) |
CN (3) | CN104198544A (fr) |
CH (3) | CH699753A1 (fr) |
WO (1) | WO2010043065A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3751282A1 (fr) | 2019-06-14 | 2020-12-16 | Gebrüder Loepfe AG | Capteur de fil capacitif avec compensation de décalage |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5092770B2 (ja) * | 2008-01-29 | 2012-12-05 | 富士通セミコンダクター株式会社 | 位相ロックループ回路及び遅延ロックループ回路 |
CH699774A2 (de) * | 2008-10-16 | 2010-04-30 | Uster Technologies Ag | Kapazitive messschaltung. |
CH703736A1 (de) * | 2010-09-07 | 2012-03-15 | Uster Technologies Ag | Justierung einer textilen messvorrichtung. |
US9013194B2 (en) | 2011-03-11 | 2015-04-21 | Uster Technologies Ag | Capacitive analysis of a moving test material |
EP2634568A1 (fr) * | 2012-03-02 | 2013-09-04 | parelectrics UG (haftungsbeschränkt) | Mesure non invasive des propriétés diélectriques d'une substance |
CN104568057B (zh) * | 2014-12-31 | 2018-08-17 | 重庆川仪自动化股份有限公司 | 一种适于导波雷达的回波信号调节方法及装置 |
RU172259U1 (ru) * | 2017-02-28 | 2017-07-03 | Пильцов Сергей Сергеевич | Первичный преобразователь для измерения импеданса двухфазного потока в трубопроводных системах |
DE102020001370A1 (de) * | 2020-02-25 | 2021-08-26 | Hilti Aktiengesellschaft | Verfahren und Vorrichtung zur kapazitiven Messung von Stoffkonzentrationen |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB638365A (en) | 1946-04-29 | 1950-06-07 | Zellweger Uster Ag | Improvements in or relating to gauging textiles, in particular yarns, roving and sliver |
GB963258A (en) | 1959-08-14 | 1964-07-08 | Juan Solanich Riera | Electronic apparatus for the detection and elimination of irregularities in thread |
GB1061635A (en) * | 1964-03-13 | 1967-03-15 | Industrial Nucleonics Corp | Measuring system |
US3684953A (en) | 1970-12-21 | 1972-08-15 | Industrial Nucleonics Corp | Single frequency moisture gauge with two-channel demodulation and feedback control of input |
US3684954A (en) * | 1970-12-21 | 1972-08-15 | Industrial Nucleonics Corp | Single frequency moisture gauge with logarithmic feedback |
US3757211A (en) * | 1970-08-29 | 1973-09-04 | Asahi Chemical Ind | Method and apparatus for on line yarn quality control |
US3768006A (en) | 1972-10-30 | 1973-10-23 | Daniel Ind Inc | Method and apparatus for direct measurement of percent |
US4706203A (en) * | 1984-12-17 | 1987-11-10 | Simmonds Precision Products, Inc. | Capacitive gauging method and apparatus |
US4772844A (en) * | 1985-10-01 | 1988-09-20 | Andeen-Hagerling, Inc. | High precision capacitance bridge |
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EP0924513A1 (fr) | 1997-12-18 | 1999-06-23 | Zellweger Luwa Ag | Méthode et appareil pour la mesure de la proportion des solides dans un échantillon |
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WO2006105676A1 (fr) | 2005-04-05 | 2006-10-12 | Uster Technologies Ag | Dispositif et procede pour controler un echantillon solide oblong |
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2008
- 2008-10-16 CH CH01646/08A patent/CH699753A1/de not_active Application Discontinuation
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2009
- 2009-10-12 US US13/121,602 patent/US8981797B2/en not_active Expired - Fee Related
- 2009-10-12 CN CN201410345080.4A patent/CN104198544A/zh active Pending
- 2009-10-12 CH CH09748935,5T patent/CH2347250H2/de unknown
- 2009-10-12 EP EP11000173A patent/EP2352018B1/fr active Active
- 2009-10-12 CH CH11000173T patent/CH2352018H2/de unknown
- 2009-10-12 CN CN201410344294.XA patent/CN104089991B/zh active Active
- 2009-10-12 WO PCT/CH2009/000329 patent/WO2010043065A1/fr active Application Filing
- 2009-10-12 EP EP09748935.5A patent/EP2347250B1/fr active Active
- 2009-10-12 JP JP2011533503A patent/JP2012506059A/ja active Pending
- 2009-10-12 CN CN200980140636.3A patent/CN102187212B/zh active Active
- 2009-10-12 EP EP11000172.4A patent/EP2352017B1/fr active Active
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3751282A1 (fr) | 2019-06-14 | 2020-12-16 | Gebrüder Loepfe AG | Capteur de fil capacitif avec compensation de décalage |
Also Published As
Publication number | Publication date |
---|---|
CH2347250H2 (fr) | 2019-09-13 |
CN102187212B (zh) | 2014-08-20 |
EP2352017A1 (fr) | 2011-08-03 |
CN104198544A (zh) | 2014-12-10 |
CN104089991A (zh) | 2014-10-08 |
EP2352018B1 (fr) | 2013-01-09 |
JP2012506059A (ja) | 2012-03-08 |
EP2347250B1 (fr) | 2014-07-30 |
WO2010043065A1 (fr) | 2010-04-22 |
CH2352018H2 (fr) | 2019-09-13 |
US20110181304A1 (en) | 2011-07-28 |
CN102187212A (zh) | 2011-09-14 |
US8981797B2 (en) | 2015-03-17 |
EP2352017B1 (fr) | 2013-07-31 |
EP2347250A1 (fr) | 2011-07-27 |
CH699753A1 (de) | 2010-04-30 |
CN104089991B (zh) | 2017-07-04 |
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